Structural Analysis (MindTap Course List)
5th Edition
ISBN: 9781133943891
Author: Aslam Kassimali
Publisher: Cengage Learning
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Chapter 8, Problem 9P
To determine
Draw the influence lines for the vertical reactions at supports A and C.
Draw the influence lines for the shear at just to the right of A.
Draw the influence lines for the bending moment at point B.
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Question 2
A sluice gate controls flow in open channels. At
sections 1 and 2, the flow is uniform and the
pressure is hydrostatic. Neglecting bottom
friction and atmospheric pressure, calculate the
velocities V1 and V2, and the horizontal force, F,
required to hold the gate if h1 = 6m, h2 = 1m, and
b = 5m.
h₁V₁
Sluice
gate, width b
F
Question 1
A pipeline 30 m long connects two tanks which
have a difference of water level of 12 m. The first
10 m of pipeline from the upper tank is of 40 mm
diameter and the next 20 m is of 60 mm diameter.
At the change of section, a valve is fitted.
Calculate the rate of flow when the valve is fully
opened assuming that its resistance is negligible
and that f for both pipes is 0.0054. In order to
restrict the flow the valve is then partially closed.
If k for the valve is now 5.6, find the percentage
reduction in flow.
Note the following
Reservoir I
Segment of Length
Pipeline
B
Diameter
(m)
(mm)
ABC
AB
10
40
BC
20
60
Head loss due to friction
h₁ = KQ²
Valve
fl
K =
3.028D'
Where,
•h₂
= k
Head loss due to partial closure
(VAB-VBC)
2g
Reservoir 2
H-12 m
Civil engineering students performed an evaluation of the two primary methods of
classification (supervised and unsupervised). The evaluation of the two methods utilized the
error matrices. Tables 1 and 2 represent supervised and unsupervised methods respectively.
Reference Data
Bare
Agriculture Buildings Forest land
Agriculture 130
8
44
48
Classified Data
Buildings 12
162
10
16
Forest
0
22
170
38
Bare land
8
14
6
180
Table 1 Results of supervised classification
252
+
Reference Data
Bare
Agriculture Buildings Forest land
Agriculture 60
16
44
48
Classified Data
Buildings
13
80
22
16
Forest
2
35
120
38
Bare land
8
14
6
180
Table 2 Results of unsupervised classification
Compare the two methods based on the following parameters:
a. User accuracy
b. Producer accuracy
c. Overall accuracy.
d. Explain the above parameters (a, b & c)
e. Which one of the two methods has higher accuracy? Justify your answer
Chapter 8 Solutions
Structural Analysis (MindTap Course List)
Ch. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 8PCh. 8 - Prob. 9PCh. 8 - Prob. 10P
Ch. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Prob. 17PCh. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - Prob. 23PCh. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Prob. 26PCh. 8 - Prob. 27PCh. 8 - Prob. 28PCh. 8 - Prob. 29PCh. 8 - Prob. 30PCh. 8 - Prob. 31PCh. 8 - Prob. 32PCh. 8 - Prob. 33PCh. 8 - Prob. 34PCh. 8 - Prob. 35PCh. 8 - Prob. 36PCh. 8 - Prob. 37PCh. 8 - Prob. 38PCh. 8 - Prob. 39PCh. 8 - Prob. 40PCh. 8 - Prob. 41PCh. 8 - Prob. 42PCh. 8 - Prob. 43PCh. 8 - Prob. 44PCh. 8 - Prob. 45PCh. 8 - Prob. 46PCh. 8 - Prob. 47PCh. 8 - Prob. 48PCh. 8 - Prob. 49PCh. 8 - Prob. 50PCh. 8 - Prob. 51PCh. 8 - Prob. 52PCh. 8 - Prob. 53PCh. 8 - Prob. 54PCh. 8 - Prob. 55PCh. 8 - Prob. 56PCh. 8 - Prob. 57PCh. 8 - Prob. 58PCh. 8 - Prob. 59PCh. 8 - Prob. 60PCh. 8 - Prob. 61P
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